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Water polo is a competitive team sport played in water between two teams of seven players each. The game consists of four quarters in which the teams attempt to score goals by throwing the ball into the opposing team's goal. The team with the most goals at the end of the game wins the match. Each team is made up of six field players and one ...
The Pople notation is named after the Nobel laureate John Pople and is a simple method of presenting second-order spin coupling systems in NMR. [1] The notation labels each (NMR active) nucleus with a letter of the alphabet. The difference in chemical shift, δ, relative to the J-coupling between nuclei mirrors the separation of the letter ...
Polonium is a radioactive element that exists in two metallic allotropes. The alpha form is the only known example of a simple cubic crystal structure in a single atom basis at STP ( space group Pm 3 m, no. 221). The unit cell has an edge length of 335.2 picometers; the beta form is rhombohedral.
In chemistry, the ball-and-stick model is a molecular model of a chemical substance which displays both the three-dimensional position of the atoms and the bonds between them. [1] The atoms are typically represented by spheres, connected by rods which represent the bonds. Double and triple bonds are usually represented by two or three curved ...
Water polo balls are designed for ease of grip. A water polo ball is a ball used in water polo and canoe polo, usually characterized by a bright yellow color and ease of grip ability, so as to allow it to be held with one hand despite its large size.
The rules of water polo were originally developed in the mid-nineteenth century in Great Britain by William Wilson, a British journalist, swimming instructor, and coach. [3] [4] Wilson was also the author of The Swimming Instructor, one of the earliest books on swimming. [3] Wilson invented the game while working at the Arlington Baths Club.
Dipolar compound. In organic chemistry, a dipolar compound or simply dipole is an electrically neutral molecule carrying a positive and a negative charge in at least one canonical description. In most dipolar compounds the charges are delocalized. [1] Unlike salts, dipolar compounds have charges on separate atoms, not on positive and negative ...
Coupon. In marketing, a coupon is a ticket or document that can be redeemed for a financial discount or rebate when purchasing a product . Customarily, coupons are issued by manufacturers of consumer packaged goods [1] or by retailers, to be used in retail stores as a part of sales promotions. They are often widely distributed through mail ...